This dataset contains all PFOS in sediment monitoring station locationsas reported to HELCOM secretariat by HELCOM Contracting Parties by 2016.

This web mapping service contains data and maps related to shipping and pollution response. The service is created with ArcGIS Server 10.9 and can be accessed via ArcGIS REST interface or OGC WMS. The service is used by HELCOM Map and Data service.

This dataset contains all PAH in seawater station locationsas reported to HELCOM secretariat by HELCOM Contracting Parties by 2016.

This dataset contains core indicator results developed under the HELCOM Third Holistic Assessment of the Ecosystem Health of the Baltic Sea (HOLAS 3).

Observations of Delamarea attenuate were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Delamarea attenuata has been placed to the Red List category of Data Deficient (DD) species. Dataset for download contains spatial grid of the Baltic Sea. Distribution of the species can be found in corresponding name column. Values are coded: 0 = no observations 1 = present before year 1995 or in 1995 2 = present after year 1995 3 = present before and after year 1995

This dataset contains all dioxins in sediments monitoring station locations as reported to HELCOM secretariat by HELCOM Contracting Parties by 2016.

Total (monthly, and 5 year average) discharge from hydropower dams (m3/s). Data includes the water that passes the turbines as well as the water not passing the turbines. The data was made available by HELCOM Contracting Parties in response to data request. The data was received from Estonia, Finland and Sweden. The activity was declared as not relevant in Denmark, Germany, Latvia, Lithuania and Poland. Data contains only those hydropower dams that are situated closest to the Baltic coast (less than 40 km), are the first ones from the coast in the river network and have a direct connection to the Baltic Sea trough river. Swedish data is a combination of actual measurements and modelling. Modelled data have been calculated with s-hype2012_version_3_0_0. These data are also presented online at http://vattenwebb.smhi.se/regulations/. Please note that data from 2015 is provisional and may be subject to revisions. Attribute specification and units: X_Long: X (East) coordinate point Y_Lat: Y (North) coordinate point Country: Country (EE=Estonia, FI=Finland, SE=Sweden) ID: Name or ID number of the hydropower dam AVG_year: A calculated yearly average discharge (m3/s) (2011-2015) jan_2011 – dec_2015 : Monthly discharge (m3/s)

Observations of Amphipholis squamata were collected from the Baltic Sea area for HELCOM Red List species list. The HELCOM Red List of Baltic Sea species in danger of becoming extinct (2013) is the first threat assessment for Baltic Sea species that covers all marine mammals, fish, birds, macrophytes (aquatic plants), and benthic invertebrates, and follows the Red List criteria of the International Union for Conservation of Nature (IUCN). Almost 2800 species were considered in the Red List assessment and about 1750 were evaluated according to the IUCN Red List criteria. Amphipholis squamata has been placed to the Red List category of Data Deficient (DD) species. Dataset for download contains spatial grid of the Baltic Sea. Distribution of the species can be found in corresponding name column. Values are coded: 1 - Present before year 2000 or in 2000, 2 - Present after year 2000, 3 - Present both before and after year 2000.

The data set is showing areas where estuaries occurs in the Baltic Sea area as polygon regions used for the BRISK project (Sub-regional risk of spill of oil and hazardous substances in the Baltic Sea, http://www.brisk.helcom.fi/). This dataset has been produced by COWI (http://www.cowi.dk) based on data collected from HELCOM, Finland (Copyright: SYKE), Lithuania, Russia and Sweden. The dataset includes data provided by the BRISK Project Partner organisations from various Baltic Sea countries. The detailed documentation of what partner provided what data is given in the Annex of the document: 70618-3.1.2.2 Data Collection Report. Estuaries have a high biodiversity. They are important breeding and foraging areas for many birds and reproduction areas for many fish species. Stranded oil may degrade slowly and the risk for damage to the habitat is high during clean up actions. The organisms encountered in the habitat are generally very vulnerable to oil.

This dataset contains monitoring data reported by Contracting Parties of HELCOM to ICES DOME database and extracted for use in Hazardous substances indicators under the HELCOM Third Holistic Assessment of the Ecosystem Health of the Baltic Sea (HOLAS 3). Attribute specifications and units: series region l3area: HELCOM ID for HELCOM assessment units in scale 3 l4area: HELCOM ID for HELCOM assessment units in scale 4 country station_co: station code station_na: station name station_lo: station long name latitude: latitude longitude: longitude MSTAT WLYTP determinan: determinand determin_1: determinand group species matrix basis unit sex metoa series_typ: series type sym_shape colour n_year_all n_year_fit n_year_pos: n year positive first_year: first year all first_ye_1: first year fit last_year p_nonlinea p_linear p_overall p_linear_t: p linear trend linear_tre: linear trend p_recent_t: p recent trend recent_tre: recent trend detectable: detectable trend mean_last_: mean last year climit_las: climit last year BAC_type BAC_value BAC_diff BAC_achiev BAC_below EAC_type EAC_value EAC_diff EAC_achiev EAC_below imposex_cl: imposed class